docs: def import_public_key(line):
      """Parse public key textual format, as saved at a .pub file."""
      log.debug('loading SSH public key: %r', line)
      file_type, base64blob, name = line.split()
      blob = base64.b64decode(base64blob)
      result = parse_pubkey(blob)
      result['name'] = name.encode('utf-8')
      assert result['type'] == file_type.encode('ascii')
      log.debug('loaded %s public key: %s', file_type, result['fingerprint'])
      return result